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The paper is devoted to analysis of flows with variable configuration of wall (in confusers and diffusers) and wall strong heating. Numerical simulation in terms of original two-parametric k-L turbulence model on the basis of experimental data is performed. Obtained results are compared with experimental ones. Effects of laminarization are fixed, practical recommendations on use of these effects are...
The paper is devoted to numerical simulation of space effects appearing with flow junction attachment and separation. Gas and oil flows through T-bends are considered. Algorithm based on two-parametric k-theory turbulence models is suggested. Among models there used k-ε models and original k-L model. Obtained results are analyzed and explained, practical recommendations on appropriate t-bend geometry...
In terms of oil-pumping system modernization, we need new approaches and solutions to create a highly efficient system of liquid hydrocarbons transportation. Besides it is not a secret that the development of the northern fields poses to transport organizations a number of serious challenges to ensure an uninterrupted supply of oil to consumers. Therefore becomes important involving to their decision...
Numerical simulation of flow non-stationary turbulent structure and heat- and mass transfer in devices of pulsed action at the expansion conditions of perfect gases chemically reacting mixture is presented. In mathematical model the thermo physical properties variability, thermal degradation of wall material, turbulence and chemical reactions interference are allowed. The detailed calculations of...
In this paper we studied results of calculation of the direct-flow and swirled, laminar and turbulent flows of liquids and gases in pipes and the channels including sections from a constant and a variable on length by the area of cross-section section. The hydrodynamics and heat transfer of the swirled flows on a method local rotation in the field of a near input in an experimental section and in...
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